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2026 Mercedes-Benz C-Class mpg

Combined mpg, C 300 RWD

29mpg

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12,000 miles a year. Gas $3.20.

1020304050607080Median 26C-Class: 29 mpg
59 sedans (2026), one trim per model: the cheapest with a rating. Median 26 mpg.
2026 Mercedes-Benz C-Class mpg by trim
TrimEngineDriveCity mpgHwy mpgCombinedTank, galMiles per tankCost a year
C 300 RWD2.0L 4cylRWD25352917.4505$1,324
C 300 4MATIC AWD2.0L 4cylAWD24332717.4470$1,422
AMG C 43 4MATIC2.0LAWD192722N/AN/A$1,745
Mercedes-AMG C-Class C 43 AMG 4MATIC AWD2.0L 4cylAWD192722N/AN/A$1,745

Fuel cost

C 300 RWD, 29 mpg combined.

Per year
$1,324
Per month
$110
Per mile
11.0 cents
Fill the tank
$55.68
  • Top trim: AMG C 43 4MATIC. $1,745 a year. $421 more than the C 300 RWD.

Trip cost

C 300 RWD: 35 mpg highway
TripGallonsCost
100 miles2.9$9.14
300 miles8.6$27.43
500 miles14.3$45.71
1,000 miles28.6$91.43

Commute cost

Per month
$96
Per year
$1,148
Miles a month
867

C 300 RWD. 20 miles each way, 5 days a week.

Is 29 mpg good? Yes. Beats 77% of 2026 cars.

MPG by year

2022242628302009201220152018202120242026
C-Class: combined mpg of the cheapest rated trim, 2009 to 2026.

C-Class by year: price, hp, mpg, size

Rivals

2026 Mercedes-Benz C-Class and rivals
CarCheapest trimCombined mpgCompare
2026 Mercedes-Benz C-ClassC 300 RWD29 mpg
2026 Dodge ChargerR/T AWD20 mpgCompare
2026 Cadillac CT5Premium Luxury RWD26 mpgCompare
2026 Audi A5Premium AWD26 mpgCompare
2026 BMW 3 Series330i Sedan RWD31 mpg
2026 Lexus ES EVES 350h Premium FWD46 mpg

What this cannot tell you

EPA ratings. Your own mpg will differ.

Gas prices change by state and by week.

How values are checked